In short: An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Blaenau Gwent we survey first, price each item separately and hand over the certificates and photos a council asks for.
- Nation
- Wales
- Pricing region
- Wales
- Postcode areas
- NP
- Main towns
- Ebbw Vale, Tredegar
What do extensions for extra rooms in Blaenau Gwent involve?
- Building control completion
- Heating, insulation and glazing
- Ensuite drainage and extraction
- Planning route check and drawings
- Kitchen or bedroom fit-out
- Fire separation and detection extended to the new space
Which rules apply in Blaenau Gwent?
- More than 6 sharers is a sui generis HMO and needs planning permission; councils such as Cardiff apply concentration limits.
- Building regulations cover structural work, partitions, drainage, fire-resisting construction and electrics; confirm with building control whether the conversion is a material change of use.
- Fitness for human habitation rules require mains-powered, interlinked smoke alarms on every storey and CO alarms where there is a gas, oil or solid-fuel appliance.
- Kitchen and bathroom ratios are set in each council’s HMO standards.
- Council HMO standards and the fire risk assessment set detection, fire doors and escape routes.
Welsh councils set their own HMO standards and may run additional licensing. In Wales, changing a house to a C4 HMO always needs planning permission, so check planning first.
How much do extensions for extra rooms cost in Blaenau Gwent?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £32,900 – £56,400 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,700 – £3,750 | m² |
Typical time on site: 8–14 weeks. For a figure for your house, try the guide-price tool.
Extensions for extra rooms by town in Blaenau Gwent
Questions about extensions for extra rooms in Blaenau Gwent
Do you handle building control?
Yes, from application to completion certificate.
Can I extend an HMO under permitted development?
Some extensions to houses are permitted development, but rules differ for HMOs and by nation and council. We check the address before design.
Do you carry out extensions for extra rooms across Blaenau Gwent?
Yes, across the whole of Blaenau Gwent, including Ebbw Vale, Tredegar.
Who licenses HMOs in Blaenau Gwent?
Blaenau Gwent council licenses HMOs in its area. Landlords must also register with Rent Smart Wales.
Other HMO services in Blaenau Gwent
- Loft conversions for extra rooms in Blaenau Gwent
- Communal kitchen refits in Blaenau Gwent
- Layout changes and room reconfiguration in Blaenau Gwent
- Large HMO conversions (7+ sharers) in Blaenau Gwent
- Ensuite installation in Blaenau Gwent
- House to HMO conversion in Blaenau Gwent
- Fire doors in Blaenau Gwent
- Rewires and EICR remedials in Blaenau Gwent